But Richards said he identified them sufficiently for Moody to call them within minutes of his January 2015 phone call with Moodie.

"It was a leak from a person who was a director of the board," Richards told the Victorian Supreme Court on Tuesday.

The information came from a journalist, meaning there were earlier leaks that were also investigated by Perna, the court heard.

"The initial leaker was identified but that doesn't mean he was the only leaker," Richards said.

Perna determined Moodie was not the original source of the January 2015 leak about positive cobalt swabs for the Kavanagh and O'Brien horses.

But he found Moodie inappropriately disclosed information to Moody, compromising or potentially compromising the investigation's integrity, and misled Racing Victoria's integrity council and board about it.